1 | /* Definitions for code generation pass of GNU compiler. |
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2 | Copyright (C) 1987, 91-97, 1998 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | /* The default branch cost is 1. */ |
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22 | #ifndef BRANCH_COST |
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23 | #define BRANCH_COST 1 |
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24 | #endif |
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25 | |
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26 | /* Macros to access the slots of a QUEUED rtx. |
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27 | Here rather than in rtl.h because only the expansion pass |
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28 | should ever encounter a QUEUED. */ |
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29 | |
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30 | /* The variable for which an increment is queued. */ |
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31 | #define QUEUED_VAR(P) XEXP (P, 0) |
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32 | /* If the increment has been emitted, this is the insn |
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33 | that does the increment. It is zero before the increment is emitted. */ |
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34 | #define QUEUED_INSN(P) XEXP (P, 1) |
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35 | /* If a pre-increment copy has been generated, this is the copy |
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36 | (it is a temporary reg). Zero if no copy made yet. */ |
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37 | #define QUEUED_COPY(P) XEXP (P, 2) |
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38 | /* This is the body to use for the insn to do the increment. |
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39 | It is used to emit the increment. */ |
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40 | #define QUEUED_BODY(P) XEXP (P, 3) |
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41 | /* Next QUEUED in the queue. */ |
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42 | #define QUEUED_NEXT(P) XEXP (P, 4) |
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43 | |
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44 | /* This is the 4th arg to `expand_expr'. |
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45 | EXPAND_SUM means it is ok to return a PLUS rtx or MULT rtx. |
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46 | EXPAND_INITIALIZER is similar but also record any labels on forced_labels. |
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47 | EXPAND_CONST_ADDRESS means it is ok to return a MEM whose address |
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48 | is a constant that is not a legitimate address. |
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49 | EXPAND_MEMORY_USE_* are explained below. */ |
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50 | enum expand_modifier {EXPAND_NORMAL, EXPAND_SUM, |
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51 | EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER, |
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52 | EXPAND_MEMORY_USE_WO, EXPAND_MEMORY_USE_RW, |
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53 | EXPAND_MEMORY_USE_BAD, EXPAND_MEMORY_USE_DONT}; |
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54 | |
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55 | /* Argument for chkr_* functions. |
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56 | MEMORY_USE_RO: the pointer reads memory. |
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57 | MEMORY_USE_WO: the pointer writes to memory. |
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58 | MEMORY_USE_RW: the pointer modifies memory (ie it reads and writes). An |
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59 | example is (*ptr)++ |
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60 | MEMORY_USE_BAD: use this if you don't know the behavior of the pointer, or |
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61 | if you know there are no pointers. Using an INDIRECT_REF |
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62 | with MEMORY_USE_BAD will abort. |
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63 | MEMORY_USE_TW: just test for writing, without update. Special. |
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64 | MEMORY_USE_DONT: the memory is neither read nor written. This is used by |
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65 | '->' and '.'. */ |
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66 | enum memory_use_mode {MEMORY_USE_BAD = 0, MEMORY_USE_RO = 1, |
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67 | MEMORY_USE_WO = 2, MEMORY_USE_RW = 3, |
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68 | MEMORY_USE_TW = 6, MEMORY_USE_DONT = 99}; |
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69 | |
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70 | /* List of labels that must never be deleted. */ |
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71 | extern rtx forced_labels; |
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72 | |
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73 | /* List (chain of EXPR_LISTs) of pseudo-regs of SAVE_EXPRs. |
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74 | So we can mark them all live at the end of the function, if stupid. */ |
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75 | extern rtx save_expr_regs; |
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76 | |
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77 | extern int current_function_calls_alloca; |
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78 | extern int current_function_outgoing_args_size; |
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79 | |
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80 | /* This is the offset from the arg pointer to the place where the first |
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81 | anonymous arg can be found, if there is one. */ |
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82 | extern rtx current_function_arg_offset_rtx; |
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83 | |
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84 | /* This is nonzero if the current function uses the constant pool. */ |
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85 | extern int current_function_uses_const_pool; |
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86 | |
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87 | /* This is nonzero if the current function uses pic_offset_table_rtx. */ |
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88 | extern int current_function_uses_pic_offset_table; |
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89 | |
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90 | /* The arg pointer hard register, or the pseudo into which it was copied. */ |
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91 | extern rtx current_function_internal_arg_pointer; |
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92 | |
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93 | /* Nonzero means stack pops must not be deferred, and deferred stack |
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94 | pops must not be output. It is nonzero inside a function call, |
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95 | inside a conditional expression, inside a statement expression, |
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96 | and in other cases as well. */ |
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97 | extern int inhibit_defer_pop; |
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98 | |
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99 | /* Number of function calls seen so far in current function. */ |
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100 | |
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101 | extern int function_call_count; |
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102 | |
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103 | /* RTX for stack slot that holds the current handler for nonlocal gotos. |
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104 | Zero when function does not have nonlocal labels. */ |
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105 | |
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106 | extern rtx nonlocal_goto_handler_slot; |
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107 | |
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108 | /* RTX for stack slot that holds the stack pointer value to restore |
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109 | for a nonlocal goto. |
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110 | Zero when function does not have nonlocal labels. */ |
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111 | |
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112 | extern rtx nonlocal_goto_stack_level; |
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113 | |
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114 | /* List (chain of TREE_LIST) of LABEL_DECLs for all nonlocal labels |
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115 | (labels to which there can be nonlocal gotos from nested functions) |
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116 | in this function. */ |
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117 | |
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118 | #ifdef TREE_CODE /* Don't lose if tree.h not included. */ |
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119 | extern tree nonlocal_labels; |
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120 | #endif |
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121 | |
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122 | #define NO_DEFER_POP (inhibit_defer_pop += 1) |
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123 | #define OK_DEFER_POP (inhibit_defer_pop -= 1) |
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124 | |
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125 | /* Number of units that we should eventually pop off the stack. |
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126 | These are the arguments to function calls that have already returned. */ |
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127 | extern int pending_stack_adjust; |
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128 | |
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129 | /* When temporaries are created by TARGET_EXPRs, they are created at |
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130 | this level of temp_slot_level, so that they can remain allocated |
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131 | until no longer needed. CLEANUP_POINT_EXPRs define the lifetime |
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132 | of TARGET_EXPRs. */ |
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133 | extern int target_temp_slot_level; |
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134 | |
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135 | #ifdef TREE_CODE /* Don't lose if tree.h not included. */ |
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136 | /* Structure to record the size of a sequence of arguments |
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137 | as the sum of a tree-expression and a constant. */ |
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138 | |
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139 | struct args_size |
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140 | { |
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141 | HOST_WIDE_INT constant; |
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142 | tree var; |
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143 | }; |
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144 | #endif |
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145 | |
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146 | /* Add the value of the tree INC to the `struct args_size' TO. */ |
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147 | |
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148 | #define ADD_PARM_SIZE(TO, INC) \ |
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149 | { tree inc = (INC); \ |
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150 | if (TREE_CODE (inc) == INTEGER_CST) \ |
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151 | (TO).constant += TREE_INT_CST_LOW (inc); \ |
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152 | else if ((TO).var == 0) \ |
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153 | (TO).var = inc; \ |
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154 | else \ |
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155 | (TO).var = size_binop (PLUS_EXPR, (TO).var, inc); } |
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156 | |
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157 | #define SUB_PARM_SIZE(TO, DEC) \ |
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158 | { tree dec = (DEC); \ |
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159 | if (TREE_CODE (dec) == INTEGER_CST) \ |
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160 | (TO).constant -= TREE_INT_CST_LOW (dec); \ |
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161 | else if ((TO).var == 0) \ |
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162 | (TO).var = size_binop (MINUS_EXPR, integer_zero_node, dec); \ |
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163 | else \ |
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164 | (TO).var = size_binop (MINUS_EXPR, (TO).var, dec); } |
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165 | |
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166 | /* Convert the implicit sum in a `struct args_size' into an rtx. */ |
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167 | #define ARGS_SIZE_RTX(SIZE) \ |
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168 | ((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \ |
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169 | : expand_expr (size_binop (PLUS_EXPR, (SIZE).var, \ |
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170 | size_int ((SIZE).constant)), \ |
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171 | NULL_RTX, VOIDmode, EXPAND_MEMORY_USE_BAD)) |
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172 | |
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173 | /* Convert the implicit sum in a `struct args_size' into a tree. */ |
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174 | #define ARGS_SIZE_TREE(SIZE) \ |
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175 | ((SIZE).var == 0 ? size_int ((SIZE).constant) \ |
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176 | : size_binop (PLUS_EXPR, (SIZE).var, size_int ((SIZE).constant))) |
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177 | |
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178 | /* Supply a default definition for FUNCTION_ARG_PADDING: |
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179 | usually pad upward, but pad short args downward on |
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180 | big-endian machines. */ |
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181 | |
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182 | enum direction {none, upward, downward}; /* Value has this type. */ |
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183 | |
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184 | #ifndef FUNCTION_ARG_PADDING |
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185 | #define FUNCTION_ARG_PADDING(MODE, TYPE) \ |
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186 | (! BYTES_BIG_ENDIAN \ |
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187 | ? upward \ |
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188 | : (((MODE) == BLKmode \ |
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189 | ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ |
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190 | && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \ |
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191 | : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \ |
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192 | ? downward : upward)) |
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193 | #endif |
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194 | |
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195 | /* Supply a default definition for FUNCTION_ARG_BOUNDARY. Normally, we let |
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196 | FUNCTION_ARG_PADDING, which also pads the length, handle any needed |
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197 | alignment. */ |
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198 | |
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199 | #ifndef FUNCTION_ARG_BOUNDARY |
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200 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) PARM_BOUNDARY |
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201 | #endif |
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202 | |
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203 | /* Nonzero if we do not know how to pass TYPE solely in registers. |
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204 | We cannot do so in the following cases: |
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205 | |
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206 | - if the type has variable size |
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207 | - if the type is marked as addressable (it is required to be constructed |
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208 | into the stack) |
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209 | - if the padding and mode of the type is such that a copy into a register |
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210 | would put it into the wrong part of the register. |
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211 | |
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212 | Which padding can't be supported depends on the byte endianness. |
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213 | |
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214 | A value in a register is implicitly padded at the most significant end. |
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215 | On a big-endian machine, that is the lower end in memory. |
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216 | So a value padded in memory at the upper end can't go in a register. |
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217 | For a little-endian machine, the reverse is true. */ |
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218 | |
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219 | #define MUST_PASS_IN_STACK(MODE,TYPE) \ |
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220 | ((TYPE) != 0 \ |
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221 | && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ |
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222 | || TREE_ADDRESSABLE (TYPE) \ |
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223 | || ((MODE) == BLKmode \ |
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224 | && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ |
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225 | && 0 == (int_size_in_bytes (TYPE) \ |
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226 | % (PARM_BOUNDARY / BITS_PER_UNIT))) \ |
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227 | && (FUNCTION_ARG_PADDING (MODE, TYPE) \ |
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228 | == (BYTES_BIG_ENDIAN ? upward : downward))))) |
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229 | |
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230 | /* Nonzero if type TYPE should be returned in memory. |
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231 | Most machines can use the following default definition. */ |
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232 | |
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233 | #ifndef RETURN_IN_MEMORY |
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234 | #define RETURN_IN_MEMORY(TYPE) (TYPE_MODE (TYPE) == BLKmode) |
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235 | #endif |
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236 | |
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237 | /* Provide default values for the macros controlling stack checking. */ |
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238 | |
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239 | #ifndef STACK_CHECK_BUILTIN |
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240 | #define STACK_CHECK_BUILTIN 0 |
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241 | #endif |
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242 | |
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243 | /* The default interval is one page. */ |
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244 | #ifndef STACK_CHECK_PROBE_INTERVAL |
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245 | #define STACK_CHECK_PROBE_INTERVAL 4096 |
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246 | #endif |
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247 | |
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248 | /* The default is to do a store into the stack. */ |
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249 | #ifndef STACK_CHECK_PROBE_LOAD |
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250 | #define STACK_CHECK_PROBE_LOAD 0 |
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251 | #endif |
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252 | |
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253 | /* This value is arbitrary, but should be sufficient for most machines. */ |
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254 | #ifndef STACK_CHECK_PROTECT |
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255 | #define STACK_CHECK_PROTECT (75 * UNITS_PER_WORD) |
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256 | #endif |
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257 | |
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258 | /* Make the maximum frame size be the largest we can and still only need |
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259 | one probe per function. */ |
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260 | #ifndef STACK_CHECK_MAX_FRAME_SIZE |
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261 | #define STACK_CHECK_MAX_FRAME_SIZE \ |
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262 | (STACK_CHECK_PROBE_INTERVAL - UNITS_PER_WORD) |
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263 | #endif |
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264 | |
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265 | /* This is arbitrary, but should be large enough everywhere. */ |
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266 | #ifndef STACK_CHECK_FIXED_FRAME_SIZE |
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267 | #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) |
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268 | #endif |
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269 | |
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270 | /* Provide a reasonable default for the maximum size of an object to |
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271 | allocate in the fixed frame. We may need to be able to make this |
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272 | controllable by the user at some point. */ |
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273 | #ifndef STACK_CHECK_MAX_VAR_SIZE |
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274 | #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) |
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275 | #endif |
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276 | |
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277 | /* Optabs are tables saying how to generate insn bodies |
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278 | for various machine modes and numbers of operands. |
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279 | Each optab applies to one operation. |
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280 | For example, add_optab applies to addition. |
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281 | |
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282 | The insn_code slot is the enum insn_code that says how to |
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283 | generate an insn for this operation on a particular machine mode. |
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284 | It is CODE_FOR_nothing if there is no such insn on the target machine. |
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285 | |
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286 | The `lib_call' slot is the name of the library function that |
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287 | can be used to perform the operation. |
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288 | |
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289 | A few optabs, such as move_optab and cmp_optab, are used |
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290 | by special code. */ |
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291 | |
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292 | /* Everything that uses expr.h needs to define enum insn_code |
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293 | but we don't list it in the Makefile dependencies just for that. */ |
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294 | #include "insn-codes.h" |
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295 | |
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296 | typedef struct optab |
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297 | { |
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298 | enum rtx_code code; |
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299 | struct { |
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300 | enum insn_code insn_code; |
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301 | rtx libfunc; |
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302 | } handlers [NUM_MACHINE_MODES]; |
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303 | } * optab; |
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304 | |
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305 | /* Given an enum insn_code, access the function to construct |
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306 | the body of that kind of insn. */ |
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307 | #ifdef FUNCTION_CONVERSION_BUG |
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308 | /* Some compilers fail to convert a function properly to a |
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309 | pointer-to-function when used as an argument. |
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310 | So produce the pointer-to-function directly. |
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311 | Luckily, these compilers seem to work properly when you |
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312 | call the pointer-to-function. */ |
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313 | #define GEN_FCN(CODE) (insn_gen_function[(int) (CODE)]) |
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314 | #else |
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315 | #define GEN_FCN(CODE) (*insn_gen_function[(int) (CODE)]) |
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316 | #endif |
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317 | |
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318 | extern rtx (*const insn_gen_function[]) (); |
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319 | |
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320 | extern optab add_optab; |
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321 | extern optab sub_optab; |
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322 | extern optab smul_optab; /* Signed and floating-point multiply */ |
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323 | extern optab smul_highpart_optab; /* Signed multiply, return high word */ |
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324 | extern optab umul_highpart_optab; |
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325 | extern optab smul_widen_optab; /* Signed multiply with result |
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326 | one machine mode wider than args */ |
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327 | extern optab umul_widen_optab; |
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328 | extern optab sdiv_optab; /* Signed divide */ |
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329 | extern optab sdivmod_optab; /* Signed divide-and-remainder in one */ |
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330 | extern optab udiv_optab; |
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331 | extern optab udivmod_optab; |
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332 | extern optab smod_optab; /* Signed remainder */ |
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333 | extern optab umod_optab; |
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334 | extern optab flodiv_optab; /* Optab for floating divide. */ |
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335 | extern optab ftrunc_optab; /* Convert float to integer in float fmt */ |
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336 | extern optab and_optab; /* Logical and */ |
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337 | extern optab ior_optab; /* Logical or */ |
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338 | extern optab xor_optab; /* Logical xor */ |
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339 | extern optab ashl_optab; /* Arithmetic shift left */ |
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340 | extern optab ashr_optab; /* Arithmetic shift right */ |
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341 | extern optab lshr_optab; /* Logical shift right */ |
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342 | extern optab rotl_optab; /* Rotate left */ |
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343 | extern optab rotr_optab; /* Rotate right */ |
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344 | extern optab smin_optab; /* Signed and floating-point minimum value */ |
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345 | extern optab smax_optab; /* Signed and floating-point maximum value */ |
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346 | extern optab umin_optab; /* Unsigned minimum value */ |
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347 | extern optab umax_optab; /* Unsigned maximum value */ |
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348 | |
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349 | extern optab mov_optab; /* Move instruction. */ |
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350 | extern optab movstrict_optab; /* Move, preserving high part of register. */ |
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351 | |
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352 | extern optab cmp_optab; /* Compare insn; two operands. */ |
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353 | extern optab tst_optab; /* tst insn; compare one operand against 0 */ |
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354 | |
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355 | /* Unary operations */ |
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356 | extern optab neg_optab; /* Negation */ |
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357 | extern optab abs_optab; /* Abs value */ |
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358 | extern optab one_cmpl_optab; /* Bitwise not */ |
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359 | extern optab ffs_optab; /* Find first bit set */ |
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360 | extern optab sqrt_optab; /* Square root */ |
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361 | extern optab sin_optab; /* Sine */ |
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362 | extern optab cos_optab; /* Cosine */ |
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363 | extern optab strlen_optab; /* String length */ |
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364 | |
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365 | /* Tables of patterns for extending one integer mode to another. */ |
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366 | extern enum insn_code extendtab[MAX_MACHINE_MODE][MAX_MACHINE_MODE][2]; |
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367 | |
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368 | /* Tables of patterns for converting between fixed and floating point. */ |
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369 | extern enum insn_code fixtab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2]; |
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370 | extern enum insn_code fixtrunctab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2]; |
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371 | extern enum insn_code floattab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2]; |
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372 | |
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373 | /* Contains the optab used for each rtx code. */ |
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374 | extern optab code_to_optab[NUM_RTX_CODE + 1]; |
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375 | |
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376 | /* Passed to expand_binop and expand_unop to say which options to try to use |
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377 | if the requested operation can't be open-coded on the requisite mode. |
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378 | Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using a library call. |
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379 | Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try using a wider mode. |
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380 | OPTAB_MUST_WIDEN says try widening and don't try anything else. */ |
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381 | |
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382 | enum optab_methods |
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383 | { |
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384 | OPTAB_DIRECT, |
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385 | OPTAB_LIB, |
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386 | OPTAB_WIDEN, |
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387 | OPTAB_LIB_WIDEN, |
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388 | OPTAB_MUST_WIDEN |
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389 | }; |
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390 | |
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391 | /* SYMBOL_REF rtx's for the library functions that are called |
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392 | implicitly and not via optabs. */ |
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393 | |
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394 | extern rtx extendsfdf2_libfunc; |
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395 | extern rtx extendsfxf2_libfunc; |
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396 | extern rtx extendsftf2_libfunc; |
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397 | extern rtx extenddfxf2_libfunc; |
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398 | extern rtx extenddftf2_libfunc; |
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399 | |
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400 | extern rtx truncdfsf2_libfunc; |
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401 | extern rtx truncxfsf2_libfunc; |
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402 | extern rtx trunctfsf2_libfunc; |
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403 | extern rtx truncxfdf2_libfunc; |
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404 | extern rtx trunctfdf2_libfunc; |
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405 | |
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406 | extern rtx memcpy_libfunc; |
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407 | extern rtx bcopy_libfunc; |
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408 | extern rtx memcmp_libfunc; |
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409 | extern rtx bcmp_libfunc; |
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410 | extern rtx memset_libfunc; |
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411 | extern rtx bzero_libfunc; |
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412 | |
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413 | extern rtx throw_libfunc; |
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414 | extern rtx sjthrow_libfunc; |
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415 | extern rtx sjpopnthrow_libfunc; |
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416 | extern rtx terminate_libfunc; |
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417 | extern rtx setjmp_libfunc; |
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418 | extern rtx longjmp_libfunc; |
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419 | |
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420 | extern rtx eqhf2_libfunc; |
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421 | extern rtx nehf2_libfunc; |
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422 | extern rtx gthf2_libfunc; |
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423 | extern rtx gehf2_libfunc; |
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424 | extern rtx lthf2_libfunc; |
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425 | extern rtx lehf2_libfunc; |
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426 | |
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427 | extern rtx eqsf2_libfunc; |
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428 | extern rtx nesf2_libfunc; |
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429 | extern rtx gtsf2_libfunc; |
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430 | extern rtx gesf2_libfunc; |
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431 | extern rtx ltsf2_libfunc; |
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432 | extern rtx lesf2_libfunc; |
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433 | |
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434 | extern rtx eqdf2_libfunc; |
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435 | extern rtx nedf2_libfunc; |
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436 | extern rtx gtdf2_libfunc; |
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437 | extern rtx gedf2_libfunc; |
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438 | extern rtx ltdf2_libfunc; |
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439 | extern rtx ledf2_libfunc; |
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440 | |
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441 | extern rtx eqxf2_libfunc; |
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442 | extern rtx nexf2_libfunc; |
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443 | extern rtx gtxf2_libfunc; |
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444 | extern rtx gexf2_libfunc; |
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445 | extern rtx ltxf2_libfunc; |
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446 | extern rtx lexf2_libfunc; |
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447 | |
---|
448 | extern rtx eqtf2_libfunc; |
---|
449 | extern rtx netf2_libfunc; |
---|
450 | extern rtx gttf2_libfunc; |
---|
451 | extern rtx getf2_libfunc; |
---|
452 | extern rtx lttf2_libfunc; |
---|
453 | extern rtx letf2_libfunc; |
---|
454 | |
---|
455 | extern rtx floatsisf_libfunc; |
---|
456 | extern rtx floatdisf_libfunc; |
---|
457 | extern rtx floattisf_libfunc; |
---|
458 | |
---|
459 | extern rtx floatsidf_libfunc; |
---|
460 | extern rtx floatdidf_libfunc; |
---|
461 | extern rtx floattidf_libfunc; |
---|
462 | |
---|
463 | extern rtx floatsixf_libfunc; |
---|
464 | extern rtx floatdixf_libfunc; |
---|
465 | extern rtx floattixf_libfunc; |
---|
466 | |
---|
467 | extern rtx floatsitf_libfunc; |
---|
468 | extern rtx floatditf_libfunc; |
---|
469 | extern rtx floattitf_libfunc; |
---|
470 | |
---|
471 | extern rtx fixsfsi_libfunc; |
---|
472 | extern rtx fixsfdi_libfunc; |
---|
473 | extern rtx fixsfti_libfunc; |
---|
474 | |
---|
475 | extern rtx fixdfsi_libfunc; |
---|
476 | extern rtx fixdfdi_libfunc; |
---|
477 | extern rtx fixdfti_libfunc; |
---|
478 | |
---|
479 | extern rtx fixxfsi_libfunc; |
---|
480 | extern rtx fixxfdi_libfunc; |
---|
481 | extern rtx fixxfti_libfunc; |
---|
482 | |
---|
483 | extern rtx fixtfsi_libfunc; |
---|
484 | extern rtx fixtfdi_libfunc; |
---|
485 | extern rtx fixtfti_libfunc; |
---|
486 | |
---|
487 | extern rtx fixunssfsi_libfunc; |
---|
488 | extern rtx fixunssfdi_libfunc; |
---|
489 | extern rtx fixunssfti_libfunc; |
---|
490 | |
---|
491 | extern rtx fixunsdfsi_libfunc; |
---|
492 | extern rtx fixunsdfdi_libfunc; |
---|
493 | extern rtx fixunsdfti_libfunc; |
---|
494 | |
---|
495 | extern rtx fixunsxfsi_libfunc; |
---|
496 | extern rtx fixunsxfdi_libfunc; |
---|
497 | extern rtx fixunsxfti_libfunc; |
---|
498 | |
---|
499 | extern rtx fixunstfsi_libfunc; |
---|
500 | extern rtx fixunstfdi_libfunc; |
---|
501 | extern rtx fixunstfti_libfunc; |
---|
502 | |
---|
503 | /* For check-memory-usage. */ |
---|
504 | extern rtx chkr_check_addr_libfunc; |
---|
505 | extern rtx chkr_set_right_libfunc; |
---|
506 | extern rtx chkr_copy_bitmap_libfunc; |
---|
507 | extern rtx chkr_check_exec_libfunc; |
---|
508 | extern rtx chkr_check_str_libfunc; |
---|
509 | |
---|
510 | typedef rtx (*rtxfun) (); |
---|
511 | |
---|
512 | /* Indexed by the rtx-code for a conditional (eg. EQ, LT,...) |
---|
513 | gives the gen_function to make a branch to test that condition. */ |
---|
514 | |
---|
515 | extern rtxfun bcc_gen_fctn[NUM_RTX_CODE]; |
---|
516 | |
---|
517 | /* Indexed by the rtx-code for a conditional (eg. EQ, LT,...) |
---|
518 | gives the insn code to make a store-condition insn |
---|
519 | to test that condition. */ |
---|
520 | |
---|
521 | extern enum insn_code setcc_gen_code[NUM_RTX_CODE]; |
---|
522 | |
---|
523 | #ifdef HAVE_conditional_move |
---|
524 | /* Indexed by the the machine mode, gives the insn code to make a conditional |
---|
525 | move insn. */ |
---|
526 | |
---|
527 | extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES]; |
---|
528 | #endif |
---|
529 | |
---|
530 | /* This array records the insn_code of insns to perform block moves. */ |
---|
531 | extern enum insn_code movstr_optab[NUM_MACHINE_MODES]; |
---|
532 | |
---|
533 | /* This array records the insn_code of insns to perform block clears. */ |
---|
534 | extern enum insn_code clrstr_optab[NUM_MACHINE_MODES]; |
---|
535 | |
---|
536 | /* Define functions given in optabs.c. */ |
---|
537 | |
---|
538 | /* Expand a binary operation given optab and rtx operands. */ |
---|
539 | extern rtx expand_binop PROTO((enum machine_mode, optab, rtx, rtx, rtx, |
---|
540 | int, enum optab_methods)); |
---|
541 | |
---|
542 | /* Expand a binary operation with both signed and unsigned forms. */ |
---|
543 | extern rtx sign_expand_binop PROTO((enum machine_mode, optab, optab, rtx, |
---|
544 | rtx, rtx, int, enum optab_methods)); |
---|
545 | |
---|
546 | /* Generate code to perform an operation on two operands with two results. */ |
---|
547 | extern int expand_twoval_binop PROTO((optab, rtx, rtx, rtx, rtx, int)); |
---|
548 | |
---|
549 | /* Expand a unary arithmetic operation given optab rtx operand. */ |
---|
550 | extern rtx expand_unop PROTO((enum machine_mode, optab, rtx, rtx, int)); |
---|
551 | |
---|
552 | /* Expand the absolute value operation. */ |
---|
553 | extern rtx expand_abs PROTO((enum machine_mode, rtx, rtx, int, int)); |
---|
554 | |
---|
555 | /* Expand the complex absolute value operation. */ |
---|
556 | extern rtx expand_complex_abs PROTO((enum machine_mode, rtx, rtx, int)); |
---|
557 | |
---|
558 | /* Generate an instruction with a given INSN_CODE with an output and |
---|
559 | an input. */ |
---|
560 | extern void emit_unop_insn PROTO((int, rtx, rtx, enum rtx_code)); |
---|
561 | |
---|
562 | /* Emit code to perform a series of operations on a multi-word quantity, one |
---|
563 | word at a time. */ |
---|
564 | extern rtx emit_no_conflict_block PROTO((rtx, rtx, rtx, rtx, rtx)); |
---|
565 | |
---|
566 | /* Emit code to make a call to a constant function or a library call. */ |
---|
567 | extern void emit_libcall_block PROTO((rtx, rtx, rtx, rtx)); |
---|
568 | |
---|
569 | /* Emit one rtl instruction to store zero in specified rtx. */ |
---|
570 | extern void emit_clr_insn PROTO((rtx)); |
---|
571 | |
---|
572 | /* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */ |
---|
573 | extern void emit_0_to_1_insn PROTO((rtx)); |
---|
574 | |
---|
575 | /* Emit one rtl insn to compare two rtx's. */ |
---|
576 | extern void emit_cmp_insn PROTO((rtx, rtx, enum rtx_code, rtx, |
---|
577 | enum machine_mode, int, int)); |
---|
578 | |
---|
579 | /* Nonzero if a compare of mode MODE can be done straightforwardly |
---|
580 | (without splitting it into pieces). */ |
---|
581 | extern int can_compare_p PROTO((enum machine_mode)); |
---|
582 | |
---|
583 | /* Emit a library call comparison between floating point X and Y. |
---|
584 | COMPARISON is the rtl operator to compare with (EQ, NE, GT, etc.). */ |
---|
585 | extern void emit_float_lib_cmp PROTO((rtx, rtx, enum rtx_code)); |
---|
586 | |
---|
587 | /* Generate code to indirectly jump to a location given in the rtx LOC. */ |
---|
588 | extern void emit_indirect_jump PROTO((rtx)); |
---|
589 | |
---|
590 | #ifdef HAVE_conditional_move |
---|
591 | /* Emit a conditional move operation. */ |
---|
592 | rtx emit_conditional_move PROTO((rtx, enum rtx_code, rtx, rtx, |
---|
593 | enum machine_mode, rtx, rtx, |
---|
594 | enum machine_mode, int)); |
---|
595 | |
---|
596 | /* Return non-zero if the conditional move is supported. */ |
---|
597 | int can_conditionally_move_p PROTO((enum machine_mode mode)); |
---|
598 | #endif |
---|
599 | |
---|
600 | /* Create but don't emit one rtl instruction to add one rtx into another. |
---|
601 | Modes must match; operands must meet the operation's predicates. |
---|
602 | Likewise for subtraction and for just copying. |
---|
603 | These do not call protect_from_queue; caller must do so. */ |
---|
604 | extern rtx gen_add2_insn PROTO((rtx, rtx)); |
---|
605 | extern rtx gen_sub2_insn PROTO((rtx, rtx)); |
---|
606 | extern rtx gen_move_insn PROTO((rtx, rtx)); |
---|
607 | extern int have_add2_insn PROTO((enum machine_mode)); |
---|
608 | extern int have_sub2_insn PROTO((enum machine_mode)); |
---|
609 | |
---|
610 | /* Return the INSN_CODE to use for an extend operation. */ |
---|
611 | extern enum insn_code can_extend_p PROTO((enum machine_mode, |
---|
612 | enum machine_mode, int)); |
---|
613 | |
---|
614 | /* Generate the body of an insn to extend Y (with mode MFROM) |
---|
615 | into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */ |
---|
616 | extern rtx gen_extend_insn PROTO((rtx, rtx, enum machine_mode, |
---|
617 | enum machine_mode, int)); |
---|
618 | |
---|
619 | /* Initialize the tables that control conversion between fixed and |
---|
620 | floating values. */ |
---|
621 | extern void init_fixtab PROTO((void)); |
---|
622 | extern void init_floattab PROTO((void)); |
---|
623 | |
---|
624 | /* Generate code for a FLOAT_EXPR. */ |
---|
625 | extern void expand_float PROTO((rtx, rtx, int)); |
---|
626 | |
---|
627 | /* Generate code for a FIX_EXPR. */ |
---|
628 | extern void expand_fix PROTO((rtx, rtx, int)); |
---|
629 | |
---|
630 | /* Call this once to initialize the contents of the optabs |
---|
631 | appropriately for the current target machine. */ |
---|
632 | extern void init_optabs PROTO((void)); |
---|
633 | |
---|
634 | /* Functions from expmed.c: */ |
---|
635 | |
---|
636 | /* Arguments MODE, RTX: return an rtx for the negation of that value. |
---|
637 | May emit insns. */ |
---|
638 | extern rtx negate_rtx PROTO((enum machine_mode, rtx)); |
---|
639 | |
---|
640 | /* Expand a logical AND operation. */ |
---|
641 | extern rtx expand_and PROTO((rtx, rtx, rtx)); |
---|
642 | |
---|
643 | /* Emit a store-flag operation. */ |
---|
644 | extern rtx emit_store_flag PROTO((rtx, enum rtx_code, rtx, rtx, |
---|
645 | enum machine_mode, int, int)); |
---|
646 | |
---|
647 | /* Like emit_store_flag, but always succeeds. */ |
---|
648 | extern rtx emit_store_flag_force PROTO((rtx, enum rtx_code, rtx, rtx, |
---|
649 | enum machine_mode, int, int)); |
---|
650 | |
---|
651 | /* Functions from loop.c: */ |
---|
652 | |
---|
653 | /* Given a JUMP_INSN, return a description of the test being made. */ |
---|
654 | extern rtx get_condition PROTO((rtx, rtx *)); |
---|
655 | |
---|
656 | /* Functions from expr.c: */ |
---|
657 | |
---|
658 | /* This is run once per compilation to set up which modes can be used |
---|
659 | directly in memory and to initialize the block move optab. */ |
---|
660 | extern void init_expr_once PROTO((void)); |
---|
661 | |
---|
662 | /* This is run at the start of compiling a function. */ |
---|
663 | extern void init_expr PROTO((void)); |
---|
664 | |
---|
665 | /* Use protect_from_queue to convert a QUEUED expression |
---|
666 | into something that you can put immediately into an instruction. */ |
---|
667 | extern rtx protect_from_queue PROTO((rtx, int)); |
---|
668 | |
---|
669 | /* Perform all the pending incrementations. */ |
---|
670 | extern void emit_queue PROTO((void)); |
---|
671 | |
---|
672 | /* Emit some rtl insns to move data between rtx's, converting machine modes. |
---|
673 | Both modes must be floating or both fixed. */ |
---|
674 | extern void convert_move PROTO((rtx, rtx, int)); |
---|
675 | |
---|
676 | /* Convert an rtx to specified machine mode and return the result. */ |
---|
677 | extern rtx convert_to_mode PROTO((enum machine_mode, rtx, int)); |
---|
678 | |
---|
679 | /* Convert an rtx to MODE from OLDMODE and return the result. */ |
---|
680 | extern rtx convert_modes PROTO((enum machine_mode, enum machine_mode, rtx, int)); |
---|
681 | |
---|
682 | /* Emit code to move a block Y to a block X. */ |
---|
683 | extern rtx emit_block_move PROTO((rtx, rtx, rtx, int)); |
---|
684 | |
---|
685 | /* Copy all or part of a value X into registers starting at REGNO. |
---|
686 | The number of registers to be filled is NREGS. */ |
---|
687 | extern void move_block_to_reg PROTO((int, rtx, int, enum machine_mode)); |
---|
688 | |
---|
689 | /* Copy all or part of a BLKmode value X out of registers starting at REGNO. |
---|
690 | The number of registers to be filled is NREGS. */ |
---|
691 | extern void move_block_from_reg PROTO((int, rtx, int, int)); |
---|
692 | |
---|
693 | /* Load a BLKmode value into non-consecutive registers represented by a |
---|
694 | PARALLEL. */ |
---|
695 | extern void emit_group_load PROTO((rtx, rtx)); |
---|
696 | /* Store a BLKmode value from non-consecutive registers represented by a |
---|
697 | PARALLEL. */ |
---|
698 | extern void emit_group_store PROTO((rtx, rtx)); |
---|
699 | |
---|
700 | /* Mark REG as holding a parameter for the next CALL_INSN. */ |
---|
701 | extern void use_reg PROTO((rtx *, rtx)); |
---|
702 | /* Mark NREGS consecutive regs, starting at REGNO, as holding parameters |
---|
703 | for the next CALL_INSN. */ |
---|
704 | extern void use_regs PROTO((rtx *, int, int)); |
---|
705 | /* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */ |
---|
706 | extern void use_group_regs PROTO((rtx *, rtx)); |
---|
707 | |
---|
708 | /* Write zeros through the storage of OBJECT. |
---|
709 | If OBJECT has BLKmode, SIZE is its length in bytes and ALIGN is its |
---|
710 | alignment. */ |
---|
711 | extern rtx clear_storage PROTO((rtx, rtx, int)); |
---|
712 | |
---|
713 | /* Emit insns to set X from Y. */ |
---|
714 | extern rtx emit_move_insn PROTO((rtx, rtx)); |
---|
715 | |
---|
716 | /* Emit insns to set X from Y, with no frills. */ |
---|
717 | extern rtx emit_move_insn_1 PROTO ((rtx, rtx)); |
---|
718 | |
---|
719 | /* Push a block of length SIZE (perhaps variable) |
---|
720 | and return an rtx to address the beginning of the block. */ |
---|
721 | extern rtx push_block PROTO((rtx, int, int)); |
---|
722 | |
---|
723 | /* Make an operand to push something on the stack. */ |
---|
724 | extern rtx gen_push_operand PROTO((void)); |
---|
725 | |
---|
726 | #ifdef TREE_CODE |
---|
727 | /* Generate code to push something onto the stack, given its mode and type. */ |
---|
728 | extern void emit_push_insn PROTO((rtx, enum machine_mode, tree, rtx, int, |
---|
729 | int, rtx, int, rtx, rtx)); |
---|
730 | |
---|
731 | /* Emit library call. */ |
---|
732 | extern void emit_library_call PVPROTO((rtx orgfun, int no_queue, |
---|
733 | enum machine_mode outmode, int nargs, ...)); |
---|
734 | extern rtx emit_library_call_value PVPROTO((rtx orgfun, rtx value, int no_queue, |
---|
735 | enum machine_mode outmode, int nargs, ...)); |
---|
736 | |
---|
737 | /* Expand an assignment that stores the value of FROM into TO. */ |
---|
738 | extern rtx expand_assignment PROTO((tree, tree, int, int)); |
---|
739 | |
---|
740 | /* Generate code for computing expression EXP, |
---|
741 | and storing the value into TARGET. |
---|
742 | If SUGGEST_REG is nonzero, copy the value through a register |
---|
743 | and return that register, if that is possible. */ |
---|
744 | extern rtx store_expr PROTO((tree, rtx, int)); |
---|
745 | #endif |
---|
746 | |
---|
747 | /* Given an rtx that may include add and multiply operations, |
---|
748 | generate them as insns and return a pseudo-reg containing the value. |
---|
749 | Useful after calling expand_expr with 1 as sum_ok. */ |
---|
750 | extern rtx force_operand PROTO((rtx, rtx)); |
---|
751 | |
---|
752 | extern rtx expand_builtin_setjmp PROTO((rtx, rtx)); |
---|
753 | |
---|
754 | #ifdef TREE_CODE |
---|
755 | /* Generate code for computing expression EXP. |
---|
756 | An rtx for the computed value is returned. The value is never null. |
---|
757 | In the case of a void EXP, const0_rtx is returned. */ |
---|
758 | extern rtx expand_expr PROTO((tree, rtx, enum machine_mode, |
---|
759 | enum expand_modifier)); |
---|
760 | #endif |
---|
761 | |
---|
762 | /* At the start of a function, record that we have no previously-pushed |
---|
763 | arguments waiting to be popped. */ |
---|
764 | extern void init_pending_stack_adjust PROTO((void)); |
---|
765 | |
---|
766 | /* When exiting from function, if safe, clear out any pending stack adjust |
---|
767 | so the adjustment won't get done. */ |
---|
768 | extern void clear_pending_stack_adjust PROTO((void)); |
---|
769 | |
---|
770 | /* Pop any previously-pushed arguments that have not been popped yet. */ |
---|
771 | extern void do_pending_stack_adjust PROTO((void)); |
---|
772 | |
---|
773 | #ifdef TREE_CODE |
---|
774 | /* Generate code to evaluate EXP and jump to LABEL if the value is zero. */ |
---|
775 | extern void jumpifnot PROTO((tree, rtx)); |
---|
776 | |
---|
777 | /* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */ |
---|
778 | extern void jumpif PROTO((tree, rtx)); |
---|
779 | |
---|
780 | /* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if |
---|
781 | the result is zero, or IF_TRUE_LABEL if the result is one. */ |
---|
782 | extern void do_jump PROTO((tree, rtx, rtx)); |
---|
783 | #endif |
---|
784 | |
---|
785 | /* Generate rtl to compare two rtx's, will call emit_cmp_insn. */ |
---|
786 | extern rtx compare_from_rtx PROTO((rtx, rtx, enum rtx_code, int, |
---|
787 | enum machine_mode, rtx, int)); |
---|
788 | |
---|
789 | /* Generate a tablejump instruction (used for switch statements). */ |
---|
790 | extern void do_tablejump PROTO((rtx, enum machine_mode, rtx, rtx, rtx)); |
---|
791 | |
---|
792 | #ifdef TREE_CODE |
---|
793 | /* rtl.h and tree.h were included. */ |
---|
794 | /* Return an rtx for the size in bytes of the value of an expr. */ |
---|
795 | extern rtx expr_size PROTO((tree)); |
---|
796 | |
---|
797 | extern rtx lookup_static_chain PROTO((tree)); |
---|
798 | |
---|
799 | /* Convert a stack slot address ADDR valid in function FNDECL |
---|
800 | into an address valid in this function (using a static chain). */ |
---|
801 | extern rtx fix_lexical_addr PROTO((rtx, tree)); |
---|
802 | |
---|
803 | /* Return the address of the trampoline for entering nested fn FUNCTION. */ |
---|
804 | extern rtx trampoline_address PROTO((tree)); |
---|
805 | |
---|
806 | /* Return an rtx that refers to the value returned by a function |
---|
807 | in its original home. This becomes invalid if any more code is emitted. */ |
---|
808 | extern rtx hard_function_value PROTO((tree, tree)); |
---|
809 | |
---|
810 | extern rtx prepare_call_address PROTO((rtx, tree, rtx *, int)); |
---|
811 | |
---|
812 | extern rtx expand_call PROTO((tree, rtx, int)); |
---|
813 | |
---|
814 | extern rtx expand_shift PROTO((enum tree_code, enum machine_mode, rtx, tree, rtx, int)); |
---|
815 | extern rtx expand_divmod PROTO((int, enum tree_code, enum machine_mode, rtx, rtx, rtx, int)); |
---|
816 | extern void locate_and_pad_parm PROTO((enum machine_mode, tree, int, tree, struct args_size *, struct args_size *, struct args_size *)); |
---|
817 | extern rtx expand_inline_function PROTO((tree, tree, rtx, int, tree, rtx)); |
---|
818 | /* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */ |
---|
819 | extern rtx label_rtx PROTO((tree)); |
---|
820 | #endif |
---|
821 | |
---|
822 | /* Indicate how an input argument register was promoted. */ |
---|
823 | extern rtx promoted_input_arg PROTO((int, enum machine_mode *, int *)); |
---|
824 | |
---|
825 | /* Return an rtx like arg but sans any constant terms. |
---|
826 | Returns the original rtx if it has no constant terms. |
---|
827 | The constant terms are added and stored via a second arg. */ |
---|
828 | extern rtx eliminate_constant_term PROTO((rtx, rtx *)); |
---|
829 | |
---|
830 | /* Convert arg to a valid memory address for specified machine mode, |
---|
831 | by emitting insns to perform arithmetic if nec. */ |
---|
832 | extern rtx memory_address PROTO((enum machine_mode, rtx)); |
---|
833 | |
---|
834 | /* Like `memory_address' but pretent `flag_force_addr' is 0. */ |
---|
835 | extern rtx memory_address_noforce PROTO((enum machine_mode, rtx)); |
---|
836 | |
---|
837 | /* Return a memory reference like MEMREF, but with its mode changed |
---|
838 | to MODE and its address changed to ADDR. |
---|
839 | (VOIDmode means don't change the mode. |
---|
840 | NULL for ADDR means don't change the address.) */ |
---|
841 | extern rtx change_address PROTO((rtx, enum machine_mode, rtx)); |
---|
842 | |
---|
843 | /* Return a memory reference like MEMREF, but which is known to have a |
---|
844 | valid address. */ |
---|
845 | |
---|
846 | extern rtx validize_mem PROTO((rtx)); |
---|
847 | |
---|
848 | /* Assemble the static constant template for function entry trampolines. */ |
---|
849 | extern rtx assemble_trampoline_template PROTO((void)); |
---|
850 | |
---|
851 | /* Return 1 if two rtx's are equivalent in structure and elements. */ |
---|
852 | extern int rtx_equal_p PROTO((rtx, rtx)); |
---|
853 | |
---|
854 | /* Given rtx, return new rtx whose address won't be affected by |
---|
855 | any side effects. It has been copied to a new temporary reg. */ |
---|
856 | extern rtx stabilize PROTO((rtx)); |
---|
857 | |
---|
858 | /* Given an rtx, copy all regs it refers to into new temps |
---|
859 | and return a modified copy that refers to the new temps. */ |
---|
860 | extern rtx copy_all_regs PROTO((rtx)); |
---|
861 | |
---|
862 | /* Copy given rtx to a new temp reg and return that. */ |
---|
863 | extern rtx copy_to_reg PROTO((rtx)); |
---|
864 | |
---|
865 | /* Like copy_to_reg but always make the reg Pmode. */ |
---|
866 | extern rtx copy_addr_to_reg PROTO((rtx)); |
---|
867 | |
---|
868 | /* Like copy_to_reg but always make the reg the specified mode MODE. */ |
---|
869 | extern rtx copy_to_mode_reg PROTO((enum machine_mode, rtx)); |
---|
870 | |
---|
871 | /* Copy given rtx to given temp reg and return that. */ |
---|
872 | extern rtx copy_to_suggested_reg PROTO((rtx, rtx, enum machine_mode)); |
---|
873 | |
---|
874 | /* Copy a value to a register if it isn't already a register. |
---|
875 | Args are mode (in case value is a constant) and the value. */ |
---|
876 | extern rtx force_reg PROTO((enum machine_mode, rtx)); |
---|
877 | |
---|
878 | /* Return given rtx, copied into a new temp reg if it was in memory. */ |
---|
879 | extern rtx force_not_mem PROTO((rtx)); |
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880 | |
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881 | #ifdef TREE_CODE |
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882 | /* Return mode and signedness to use when object is promoted. */ |
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883 | extern enum machine_mode promote_mode PROTO((tree, enum machine_mode, |
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884 | int *, int)); |
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885 | #endif |
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886 | |
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887 | /* Remove some bytes from the stack. An rtx says how many. */ |
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888 | extern void adjust_stack PROTO((rtx)); |
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889 | |
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890 | /* Add some bytes to the stack. An rtx says how many. */ |
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891 | extern void anti_adjust_stack PROTO((rtx)); |
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892 | |
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893 | /* This enum is used for the following two functions. */ |
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894 | enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL}; |
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895 | |
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896 | /* Save the stack pointer at the specified level. */ |
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897 | extern void emit_stack_save PROTO((enum save_level, rtx *, rtx)); |
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898 | |
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899 | /* Restore the stack pointer from a save area of the specified level. */ |
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900 | extern void emit_stack_restore PROTO((enum save_level, rtx, rtx)); |
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901 | |
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902 | /* Allocate some space on the stack dynamically and return its address. An rtx |
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903 | says how many bytes. */ |
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904 | extern rtx allocate_dynamic_stack_space PROTO((rtx, rtx, int)); |
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905 | |
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906 | /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. |
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907 | FIRST is a constant and size is a Pmode RTX. These are offsets from the |
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908 | current stack pointer. STACK_GROWS_DOWNWARD says whether to add or |
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909 | subtract from the stack. If SIZE is constant, this is done |
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910 | with a fixed number of probes. Otherwise, we must make a loop. */ |
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911 | extern void probe_stack_range PROTO((HOST_WIDE_INT, rtx)); |
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912 | |
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913 | /* Return an rtx that refers to the value returned by a library call |
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914 | in its original home. This becomes invalid if any more code is emitted. */ |
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915 | extern rtx hard_libcall_value PROTO((enum machine_mode)); |
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916 | |
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917 | /* Given an rtx, return an rtx for a value rounded up to a multiple |
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918 | of STACK_BOUNDARY / BITS_PER_UNIT. */ |
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919 | extern rtx round_push PROTO((rtx)); |
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920 | |
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921 | extern rtx store_bit_field PROTO((rtx, int, int, enum machine_mode, rtx, int, int)); |
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922 | extern rtx extract_bit_field PROTO((rtx, int, int, int, rtx, enum machine_mode, enum machine_mode, int, int)); |
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923 | extern rtx expand_mult PROTO((enum machine_mode, rtx, rtx, rtx, int)); |
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924 | extern rtx expand_mult_add PROTO((rtx, rtx, rtx, rtx,enum machine_mode, int)); |
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925 | extern rtx expand_mult_highpart_adjust PROTO((enum machine_mode, rtx, rtx, rtx, rtx, int)); |
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926 | |
---|
927 | extern rtx assemble_static_space PROTO((int)); |
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928 | |
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929 | /* Hook called by expand_expr for language-specific tree codes. |
---|
930 | It is up to the language front end to install a hook |
---|
931 | if it has any such codes that expand_expr needs to know about. */ |
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932 | extern rtx (*lang_expand_expr) (); |
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933 | |
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934 | #ifdef TREE_CODE |
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935 | /* Build bytecode call descriptor for function SUBR. */ |
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936 | extern rtx bc_build_calldesc PROTO((tree)); |
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937 | |
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938 | /* Emit a type code to be used by the runtime support in handling |
---|
939 | parameter passing. The type code consists of the machine mode |
---|
940 | plus the minimal alignment shifted left 8 bits. */ |
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941 | extern tree bc_runtime_type_code PROTO((tree)); |
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942 | #endif |
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